Easel



FIG. 1 is a front perspective view of an easel, showing my new design therefor;

FIG. 2 is a side view therefor, showing the left side, the right side being a mirror image thereof;

FIG. 3 is a frontal view therefor;

FIG. 4 is a rear view therefor;

FIG. 5 is a bottom plan view therefor; and,

FIG. 6 is a top plan view therefor. 

The ornamental design for an easel, as shown and described. 